Gas-stove.



No. 703,982. v Patented luly 8, |902.

` H. BONSOR.

GAS STOVE.

(Application filed Feb. 18, 1902.)

(No Model.)

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HEVSON BONSOR, OF BIRMINGHAM, ENGLAND.

GAS-STOVE.

SPECIFICATION forming part of Letters Patent No. 703,982, dated July 8,1909. Application fled February 13, 1902. Serial No. 93,990, (No model.)

diation from heated surfaces of refractory material andV partly by thedisch arge into the room of streams of pure air which have been warmedby flowing through pipes which are inserted in the fire, the surfaces ofthese pipes providing in themselves a portion of the radiating-surface.

In the accompanying drawings, Figure l represents a front view of thestove. In the left half the fire-bars are removed to show theconstruction of the parts behind. Fig. 2 is a side sectional elevation..

In the views, a is a tube,` which is supplied with a mixture of gas andatmospheric air which issues and burns at anumber of Vburners b l). Thename impinges beneath a bend c,

which is provided in a number of air-pipes d d, made of a refractorymaterial, the lower open end e of which is below the fireplace, and

the upper end f, also open, is above the fire.

The grate of an ordinary fireplace is replaced by a dead-plateV g, so asto preclude the entrance of air into the re, except thatment will bethat` the Vsurface of the air-pipes and the interposed loose refractorymaterial will be heated to brightness and radiate heat into the room. Atthe same time theair within the pipes d d being heated will. cause aconvention draft through the pipes, and warm air,which has not beenvitiatedby taking part in combustion, will be discharged into .the roomthrough the openings ff.

The products of combustion pass to the chimney through the throat h ofthe stove. When circumstances permit, the most perfeet result would beobtained by closing the opening t from the room to the space j below thefire by a plate and connecting the space j by a pipe to the atmosphereoutside the house. By so doing a supply ofwarm pure airto the room wouldbe insured and the flow of cold air into the room under the doors andthrough chinks would be :considerably lessened, if not avoided.

A wire screenis shown covering the airdischarge holes ff and the upperportion of the fire to prevent mischievous insertion of paper, matches,or other material.

The air-pipes d d are shown made in parts to facilitate insertion andrenewal.

Such a construction of air-pipe as shown would be most satisfactory; butI do not confine myself to the use of this .form in detail, but claim toinclude the use of any other form of pipe which is easy to make anddurable, including a straight pipe.

The combination with an open grate having a bottom dead-plate and achimney, of 'a pluralityv of vertical open-ended tubes passing upwardthrough said dead-plate and grate and curving outwardly through thewall'of the chimney, said tubes having deflected portions or bends, andburners located directly beneath said deflected portions, substantiallyas described. A

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

HEWSON "BQNSOIt Witnesses:

J AMES COOPER, ROBERT I-IARGREAvEs.

